136778308 has 6 divisors (see below), whose sum is σ = 239362046. Its totient is φ = 68389152.

The previous prime is 136778267. The next prime is 136778339. The reversal of 136778308 is 803877631.

It can be written as a sum of positive squares in only one way, i.e., 90782784 + 45995524 = 9528^2 + 6782^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17097285 + ... + 17097292.

Almost surely, 2^136778308 is an apocalyptic number.

It is an amenable number.

136778308 is a deficient number, since it is larger than the sum of its proper divisors (102583738).

136778308 is a wasteful number, since it uses less digits than its factorization.

136778308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34194581 (or 34194579 counting only the distinct ones).

The product of its (nonzero) digits is 169344, while the sum is 43.

The square root of 136778308 is about 11695.2258635736. The cubic root of 136778308 is about 515.2354571051.

The spelling of 136778308 in words is "one hundred thirty-six million, seven hundred seventy-eight thousand, three hundred eight".